People on their death bed often say that they regret spending so much time working and did not have enough fun. I propose to gamify your life by counting the number of enjoyable/pleasurable/fun/memorable things that you do each day. This idea is supported by the idea that "If you can't measure/track it you can't improve it". This also requires to both reflect and have appreciation which are two things that is commonly referred to as important. I don't know what the secret to happiness is but this sure does seem like a start.
Here is an example:
+1 Tried new coffee and it was really good
+1 no work emails until 10am
+1 school was off today therefore there was minimal traffic
+1 free lunch at work since there was a meeting
+1 it was sunny
+1 made it to the gym
+1 watched a good movie
+1 got to sleep on time
+1 got a non-work project done
= daily score 9
*Statistical analysis and graphs to follow